# coding:utf-8

user = { 'username': "fanlihao", 'age': 24, "children": [{"child1name":"xu"},{"child2name":"li"}] }

user['grade'] = 99


user['username'] = "wangyang"



user-info = {
        "id":1,
        "username":"xushuai",
    "password":"123456",
}

# print(list(user.keys()))
# print(list(user.values()))
# print(user.setdefault("father","male"))
# print(user.setdefault("username","fanlihao"))
# print(user)

